Window-catch.



v PATBNTBDMAY 14, 1907. 0.1.4.. HAMMAR & A. BRIGKMAN.

' WINDOW GATGH.

UNITED sTATns PATENT OFFICE.

CARL A. HAMMAR AN I) ALRIK BRICKMAN, OF WORCESTER, MASSACHUSETTS.

WlNDOW-CATCH.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed July 27, 1905. Serial No. 271.541.

To all whom it may concern,.-

Be it known that we, CARL A. HAMMAR and ALRIK BRICKMAN, citizens of theUnited States, residing at Worcester, in the county of VVorcester andState of'l Massachusetts, have invented a new and useful Window- Catch,of which the following is a specification.

This invention relates to that class of window catches which are usedfor fastening the meeting rails of top and bottom sashes.

The especial object of this invention is to rovide a simple, durable andinexpensive form of window catch which will lock a window so that itcannot possibly be opened from the outside of the dwelling, and whichwill tend to draw the meeting rails of the top and bottom sashestogether so as to hold the window from rattling.

To this end this invention consists of the Window catch as an article ofmanufacture, and of the combinations of parts therein as ereinafterdescribed and more particularly pointed out in the claims at the end ofthis specification.

In the accompanying drawing, Figure 1 is i fragmentary view ofsufficient parts of top and bottom window sashes to illustrate theapplication of this invention thereto. Fig. 2 s a detail view of thefixture which is carried Dy the rail of the bottom window sash. Fig is aperspective view of the fixture which is :arried by the rail of the topwindow sill. Tig. 4 is a bottom plan view of the fixture ;hown in Fig. 2partly broken away. Fig. 5

s a detail View of one of the springs, and Fig.v

S is a detail view of the bottom plate.

In that class of window catches to which `his invention relates it isdesirable to pro- ,fide a spring locking action which will lock `hewindow Whenever the same 1s closed.

In a Window catch constructed according o this invention the lockingbolt is operated y two flat springs which are housed within fiXturepreferably carried by the bottom vindow sash. The `ends of the fiatspring are eated in notches in the casing and bolt repectively.

Referring to the accompanying drawing. or a detail description of awindow catch onstructed according to this invention, A .esignates therail of a bottom window sash, nd B designates the rail of a top windowash. Secured on the rail B by means of crews in the ordinary manner is asocket xture 10.

prising a plate carrying a box or housing 13.

The lower half of the box or housing 13 is closed by a removable plate17 which is held from slipping sidewise by lugs 18.

As shown in Fig. 4 the plate 17 is fastened to the rail by means of ascrew 19.'

Extending through'the housing is a bolt 14 having a finger-piece at oneend, and a T- shaped head 16 at its other end.

As shown most clearly in Fig. 4 the bolt 14 is provided with stops orshoulders 20 for limiting its withdrawal, and is also provided withv twosets of notches 20a for receiving flat springs 21. The flat springs 21have their opposite ends seated in notches in the wall of the housing13, and when the springs 21 are snapped into place they form asubstantially heart-shaped arrangement which will provide an eflicientspring pressure for 'operating the bolt 14.

In the use of a complete window catch as thus constructed it will beseen that the T- shaped head will snap into place in the socket piece,and the tension of the sprin s will tend to draw the window sashes tighty together so as to prevent rattling or shaking of the windows whenclosed.

In assembling a complete window catch constructed according to thisinvention it will be seen that the parts may be put together in a directand simple manner, and that the only screw used in the construction isthe screw which fastens the bottom plate of the housing and even thiscan be replaced by a rivet.

We are aware that changes may be made in the shapes and proportions ofparts of a window catch constructed according to this invention withoutdeparting from the scope thereof as expressed in the claims. We do notWish, therefore, to be limited to the particular window catch we haveherein shown and described, but what We do claim and desire to secure byLetters Patent of the United- States is 1. As an article of manufacture,a window catch comprising a socket fiXture having upwardly tapering lugswhich are undercut and spaced apart to receive a T-shaped head, ahousing, a bolt mounted in the housing, and having a T-shaped head forco-operating IOO with the socket-fixture, tWo flat springs arranged onopposite sides of the bolt, the bolt having tWo sets of notches forreceiving the ends of the springs, and the housing having a set ofnotches for receiving the other ends I of the springs, a cover-plate atthe bottom of the housing having lugs for setting the same in position,and a screw fastening the coverplate in place.

2. As an article of manufacture, a window catch comprising a socketfiXture, having up- Wardly tapering lugs Which are undercut and spacedapart to receive a T-shaped head, a

housing, a bolt mounted in the housing and 'C. A. HAMMAR; ALRIKBRICKMAN.

Witnesses: v

PHILIP W. SOUTHGATE, MARY E. REGAN.

